Trailer hitch



FIG. 1 is a side elevation view of a trailer hitch showing my new design it being understood that the broken lines are for illustrative purposes only;

FIG. 2 is an enlarged side elevation view thereof;

FIG. 3 is an enlarged front elevation view thereof;

FIG. 4 is an enlarged top plan view thereof;

FIG. 5 is a rear elevation view thereof; and

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a trailer hitch, as shown and described. 